The statement, provided Saturday evening, confirms the suspicions of online sleuths and is likely to raise new questions about the company's finances.
Deloitte, one of the 'Big Four' professional services firms, is currently working on using blockchain technology to automate client auditing.
Financial fraud is easy to hide, as several large companies have shown us. Could blockchain technology make firms more financially accountable?
Bitcoin storage service Elliptic has obtained ISAE 3402 accreditation from auditing specialist KPMG.
British precious metal and bitcoin exchange Netagio has received ISAE 3000 standard certification.
Following accusations that China's top exchanges were fractional-reserve businesses, OKCoin's audit shows it holds 104.86% of customer bitcoins.
CoinDesk previews Bitreserve's new bank-like wallet and payments platform, which opens to beta users next week.
Bitcoin needs an institution-based auditing strategy that does more than simply check exchange funds.
Bitcoin exchange Bitstamp has passed an audit overseen by BitcoinJ developer Mike Hearn.
Several exchanges have already instigated inspections to reassure customers – but more thorough auditing is needed, argue experts.